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A dynamic simulation test method for the voltage regulation process of UHV on-load tap-changing transformers

A technology of dynamic simulation test and voltage regulating transformer, which is applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve problems such as performance testing, and achieve the effect of simple and easy process, reduced manpower, and simple and easy operation

Active Publication Date: 2016-02-24
STATE GRID CORP OF CHINA +1
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  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a dynamic simulation test method for the voltage regulation process of UHV on-load tap-changing transformers, which solves the performance detection problem of UHV transformer protection devices in the on-load voltage regulation process in the dynamic simulation simulation system

Method used

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  • A dynamic simulation test method for the voltage regulation process of UHV on-load tap-changing transformers
  • A dynamic simulation test method for the voltage regulation process of UHV on-load tap-changing transformers

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Embodiment 1

[0045] Such as Figure 1-2As shown, the method described in the invention of this example includes the process of positive voltage regulation and negative voltage regulation of the main transformer; the method is realized through a voltage regulation system and a sequence control system; the voltage regulation control system includes: a main transformer; The primary side input terminal of the main transformer is provided with a polarity switch and taps, and each of the taps is connected in series with the switch; a parallel bypass switch and a resistor are connected in series between the taps; the sequence The control system is composed of a dynamic simulation system of the power system, which meets the functional and technical index requirements of UHV transformer on-load voltage regulation. The pressure can be realized by sequentially turning on different taps in the simulation system;

[0046] Simulate the positive voltage regulation process of the transformer:

[0047] (...

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Abstract

The invention relates to a method for conducting a dynamic simulation test of a voltage regulation process of an extra-high voltage on-load tap changing transformer. The method comprises the positive voltage-regulation process and the negative voltage-regulation process of the transformer. The method is achieved through a voltage regulating system and a sequence control system. The voltage regulating control system comprises a main transformer. A one-time side input end of the main transformer is provided with a polarity switch and shunting taps. The positive voltage-regulation process comprises the following steps that the polarity switch is connected to the transformer gear D11 portion; the shunting tap Dn of the transformer is arranged on the gear Dn portion; the shunting tap Dn and the shunting tap Dn-1 are arranged on the gear Dn portion and the gear Dn-1 portion respectively; the shunting tap Dn-1 is arranged on the gear Dn-1 portion; the negative voltage-regulation process is opposite to the positive voltage-regulation process. According to the method, performance testing of the extra-high voltage on-load tap changing transformer in the dynamic simulation system in the on-load voltage regulation process is achieved.

Description

Technical field: [0001] The invention relates to a dynamic simulation test method, in particular to a dynamic simulation test method for the voltage regulation process of an extra-high voltage on-load voltage regulating transformer. Background technique: [0002] In the existing UHV transformers that adopt the neutral point on-load voltage regulation method, since the coil turns of the neutral point voltage regulation transformer and compensation transformer account for a relatively small proportion of the total transformer turns, when the voltage regulation transformer occurs internal When there is a turn-to-turn fault, the transformer main variable differential protection senses a relatively small differential current, and the sensitivity of the main variable differential protection is not enough. Therefore, on the basis of the original protection of the main transformer, the differential protection of the voltage regulation transformer and the compensation transformer is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 周春霞李岩军刘宇刘洪涛詹智华余越董明会晁晖贾琰崔佳王保新
Owner STATE GRID CORP OF CHINA
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